/*
 * Copyright 2017-2018 IBM Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package util

import (
	"os"
	"os/signal"
	"syscall"

	log "github.com/sirupsen/logrus"
)

// HandleOSSignals handles OS signals interrups and SIGTERM and calls cleanup()
func HandleOSSignals(cleanup func()) {
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt)
	signal.Notify(c, syscall.SIGTERM)
	go func() {
		signal := <-c
		log.Infof("Caught signal: %s", signal)
		cleanup()
		os.Exit(1)
	}()
}
